#1. Lionel Messi
Cristiano Ronaldo's biggest threat for the UEFA Champions League Golden Boot this season remains his eternal rival, Lionel Messi. The Argentine is a man on a mission in the European tournament this term and he has taken the competition by its neck with his blistering efforts so far.
The playmaker has been in a league of his own in Europe ever since the campaign began, producing a couple of extraordinary performances and sending the ball into the back of the net with great ease. He is currently on top of the goal-scoring chart with an impressive 5 goals to his name in just 2 appearances - 5 ahead of the Portuguese and 2 ahead of his closest rivals.
Messi recently spoke of his determination to conquer Europe and return the Champions League trophy to the Nou Camp, and with his impressive start to the campaign, he is on track to overtake Cristiano Ronaldo as the best finisher in the tournament this season.